IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Magnetorotational instability with Hall Effect: one­dimensional model
Autor/es:
CECILIA BEJARANO; DANIEL GÓMEZ
Lugar:
Ciudad Autónoma de Buenos Aires - Buenos Aires - Argentina
Reunión:
Workshop; High Energy Phenomena in Relativistic Outflows II; 2009
Resumen:
Accretion disks are formed by matter containing a significant amount of angular momentum being gravitationally attracted by compact objects. These very interesting astrophysical flows are a powerful mechanism ofconversion of gravitational energy into kinetic energyand radiation, and take place in a variety of objects. Theoretical models of accretion require the generation of small-scale turbulence to enhance the effective viscosity of the flow. Within the framework of magnetohydrodynamics, the Hall effect might become importantboth in fully ionized low density plasmas and in cold plasmas with a low ionization fraction. We analyze the potential relevance of the Hall effectin the magnetorotational instability and present preliminary results from a one-dimensional toy model.